CN215892424U

CN215892424U - Biomass boiler anti-backfire feeding device

Info

Publication number: CN215892424U
Application number: CN202121817862.5U
Authority: CN
Inventors: 程刚; 王伟; 陈龙; 郭才宝
Original assignee: Zhejiang Tefuweiye Thermal Energy Equipment Co ltd
Current assignee: Zhejiang Tefuweiye Thermal Energy Equipment Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2022-02-22
Anticipated expiration: 2031-08-05

Abstract

The utility model discloses an anti-backfire feeding device of a biomass boiler, which belongs to the technical field of boiler equipment and comprises a feeding channel, wherein two driving shaft levers are symmetrically arranged in the inner cavity of the feeding channel, two ends of each driving shaft lever penetrate through the side wall of the feeding channel, one end of one of the driving shaft levers is provided with a driving mechanism, and the other end of the two driving shaft levers is provided with a synchronizing mechanism, firstly, the biomass fuel is put above two horizontally placed anti-backfire baffles, and the biomass fuel on the feeding baffle is put into a combustion chamber of a boiler through a series of mechanical transmission, and at the moment, the two horizontally arranged anti-backfire baffles can play a role in blocking the backfire generated by the combustion of the biomass fuel, so that the phenomenon that the backfire flame exceeds the top of the feeding channel and is ignited to the outside to be thrown in the biomass fuel is avoided, and the safety of feeding the biomass fuel into the boiler is improved.

Description

Biomass boiler anti-backfire feeding device

Technical Field

The utility model relates to the technical field of boiler equipment, in particular to an anti-backfire feeding device of a biomass boiler.

Background

Due to the limitation of electric power and natural gas supply and gas pipelines, coal-fired boilers in China cannot be completely changed into electric boilers or gas boilers, and biomass boilers are low in price and running cost, so that the biomass boilers are easy to accept and popularize by users, and the blank is filled. The biomass energy granular fuel is prepared by crushing, mixing, extruding, drying and other processes of all waste crops such as straws, rice straws, firewood materials, wood chips, peanut shells, melon seed shells, beet pulp, barks and the like, and finally preparing the granular fuel. The operating cost is only half of that of gas. The raw materials produced by agriculture provide strong material guarantee for the popularization of the biomass boiler. The straw burning problem of farmers can be solved, resources are fully utilized, and burned ash is a very good fertilizer, so that the straw burning machine achieves multiple purposes. The development of environmental protection career is powerfully promoted, and the method is an important part of new energy strategy in China.

In the feeding process of the biomass boiler, due to the inflammable characteristic of fuel and the pressure difference between the inside of the boiler and the outside, the phenomenon of backfire through a feeding channel can be caused, the ignition phenomenon of the outside biomass fuel to be put can be seriously caused, a fire disaster is caused, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an anti-backfire feeding device of a biomass boiler, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an anti-backfire feeding device of a biomass boiler comprises a feeding channel, wherein two driving shaft levers are symmetrically arranged in an inner cavity of the feeding channel, two ends of each driving shaft lever penetrate through the side wall of the feeding channel, a driving mechanism is arranged at one end of one driving shaft lever, a synchronizing mechanism is arranged between the other ends of the two driving shaft levers, a driving cam is sleeved on the outer wall of each driving shaft lever, two anti-backfire baffles are movably arranged in the inner cavity of the feeding channel through pins and are arranged below the driving cam, limiting sliding grooves are formed in two side walls of the inner cavity of the feeding channel, a feeding baffle is movably arranged between the inner cavities of the two limiting sliding grooves through a pin lever and is arranged below the anti-backfire baffles, inverted T-shaped sliding grooves are formed in the top of the feeding baffle and in the bottom of the anti-backfire baffles, the anti-backfire baffle plate is characterized in that limiting sliding blocks are movably mounted in an inner cavity of the inverted T-shaped sliding groove, a connecting pull plate is movably mounted between the two limiting sliding blocks through pins, a limiting sleeve is sleeved on the outer wall of the connecting pull plate and fixed to the side wall of the inner cavity of the feeding channel through bolts, and a return spring is welded between the bottom of the anti-backfire baffle plate and the side wall of the feeding channel.

Preferably, the driving mechanism comprises a speed reducer fixed on the side wall of the feeding channel through a bolt, an output shaft end of the speed reducer is connected with one end of one of the driving shaft rods through a coupling, and a driving motor is mounted at an input shaft end of the speed reducer.

Preferably, the synchronizing mechanism comprises two supporting shaft rods welded on the side wall of the feeding channel and synchronizing gears sleeved at the end parts of the two driving shaft rods, the end parts of the two supporting shaft rods are sleeved with transmission gears, the transmission gears are meshed with the synchronizing gears, and the two transmission gears are meshed with each other.

Preferably, wear-resistant bearings are arranged at the connecting part of the driving shaft rod and the feeding channel and the connecting part of the supporting shaft rod and the transmission gear, the driving cam and the driving shaft rod are fixedly inserted through metal keys, and the side wall of the driving cam is in contact with the top of the anti-backfire baffle.

Preferably, the anti-backfire baffle and the feeding baffle are identical in structure, stepped notches are formed in the butt joint positions of the two anti-backfire baffles and the two feeding baffles, and the connecting pull plate and the limiting sleeve are in clearance fit.

Preferably, an open feeding hopper is welded at the top of the feeding channel, and a connecting sleeve is welded at the bottom of the feeding channel.

Compared with the prior art, the utility model has the beneficial effects that: when the biomass fuel is put in, the biomass fuel is firstly put above two horizontally placed anti-backfire baffles, the driving mechanism controls the driving shaft lever to rotate, the driving cam can downwards press the anti-backfire baffles to be in an inclined state, the pull plate is connected to push the two feeding baffles to be in a horizontal state, the biomass fuel on the anti-backfire baffles is put at the tops of the two feeding baffles, the anti-backfire baffles are restored to be in a horizontal position through the rotation of the driving shaft lever and the elastic force of the return spring, the feeding baffles are in an inclined state, so that the biomass fuel on the feeding baffles is put in a combustion chamber of a boiler, and the two horizontally arranged anti-backfire baffles can play a role of blocking the backfire generated by the combustion of the biomass fuel at the moment, and the phenomenon that the backfire flame exceeds the tops of the feeding channels to ignite the biomass fuel to be put in from the outside is avoided, the safety of feeding the biomass fuel into the boiler is improved.

Of course, it is not necessary for any product in which the utility model is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an elevational isometric view of the present invention;

FIG. 2 is a rear isometric view of the present invention;

FIG. 3 is a schematic view of the internal structure of the feed passage of the present invention;

FIG. 4 is an enlarged view of portion A of the present invention;

FIG. 5 is a schematic view of the initial structure of the anti-backfire baffle of the present invention;

FIG. 6 is an enlarged view of part B of the present invention;

FIG. 7 is a schematic view of the structure of the anti-backfire baffle plate during blanking.

In the drawings, the components represented by the respective reference numerals are listed below:

1-feeding channel, 2-feeding hopper, 3-connecting sleeve, 4-driving shaft lever, 5-speed reducer, 6-driving motor, 7-supporting shaft lever, 8-synchronous gear, 9-transmission gear, 10-driving cam, 11-anti-backfire baffle, 12-limiting sliding groove, 13-feeding baffle, 14-inverted T-shaped sliding groove, 15-limiting sliding block, 16-connecting pull plate, 17-limiting sleeve and 18-reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 7, the present invention provides a technical solution: an anti-backfire feeding device of a biomass boiler comprises a feeding channel 1, wherein an open feeding hopper 2 is welded at the top of the feeding channel 1, so that biomass fuel can be conveniently fed into an inner cavity of the feeding channel 1, and a connecting sleeve 3 is welded at the bottom of the feeding channel 1, so that the feeding channel 1 and the boiler can be conveniently mounted and dismounted;

two driving shaft levers 4 are symmetrically arranged in the inner cavity of the feeding channel 1, two ends of each driving shaft lever 4 penetrate through the side wall of the feeding channel 1, one end of one driving shaft lever 4 is provided with a driving mechanism, each driving mechanism comprises a speed reducer 5 fixed on the side wall of the feeding channel 1 through a bolt, the output shaft end of each speed reducer 5 is connected with one end of one driving shaft lever 4 through a coupling, the input shaft end of each speed reducer 5 is provided with a driving motor 6, a synchronizing mechanism is arranged between the other ends of the two driving shaft levers 4 and comprises two supporting shaft levers 7 welded on the side wall of the feeding channel 1 and synchronizing gears 8 sleeved at the end parts of the two driving shaft levers 4, the end parts of the two supporting shaft levers 7 are sleeved with transmission gears 9, the transmission gears 9 are mutually meshed with the synchronizing gears 8, the two transmission gears 9 are mutually meshed, and a worker controls the rotation of the driving shafts through a control switch arranged on the driving motors 6, the rotation of the driving motor 6 can drive the driving shaft lever 4 to rotate after being decelerated by the speed reducer 5, the driving shaft lever 4 is driven to rotate by the rotation of the driving shaft lever 8, the driving shaft lever is connected with the synchronous gear 8, the synchronous gear 8 on the side is driven to rotate by the rotation of the synchronous gear 8 on the side, the driving shaft lever 9 on the other side is driven to rotate by the rotation of the synchronous gear 9 on the side, and the driving shaft lever 4 can synchronously rotate by the rotation of the driving shaft lever 9 on the other side;

the outer wall of the driving shaft lever 4 is sleeved with a driving cam 10, two anti-backfire baffles 11 are movably mounted in the inner cavity of the feeding channel 1 through pins, the anti-backfire baffles 11 are arranged below the driving cam 10, wear-resistant bearings are mounted at the connecting part of the driving shaft lever 4 and the feeding channel 1 and the connecting part of the supporting shaft lever 7 and the transmission gear 9, the rotating wear of the connecting part of the driving shaft lever 4 and the feeding channel 1 and the connecting part of the supporting shaft lever 7 and the transmission gear 9 is reduced, the driving cam 10 and the driving shaft lever 4 are fixedly inserted through metal keys, the driving cam 10 and the driving shaft lever 4 are convenient to mount and dismount, the side wall of the driving cam 10 is in contact with the top of the anti-backfire baffles 11, and the anti-backfire baffles 11 can be pressed downwards due to the rotation of the driving cam 10;

the two side walls of the inner cavity of the feeding channel 1 are respectively provided with a limiting sliding chute 12, a feeding baffle 13 is movably arranged between the inner cavities of the two limiting sliding chutes 12 through a pin rod, the feeding baffle 13 is arranged below the anti-backfire baffle 11, the top of the feeding baffle 13 and the bottom of the anti-backfire baffle 11 are respectively provided with an inverted T-shaped sliding chute 14, the inner cavity of the inverted T-shaped sliding chute 14 is movably provided with a limiting sliding block 15, a connecting pull plate 16 is movably arranged between the two limiting sliding blocks 15 through a pin, the outer wall of the connecting pull plate 16 is sleeved with a limiting sleeve 17, the limiting sleeve 17 is fixed on the side wall of the inner cavity of the feeding channel 1 through a bolt, the anti-backfire baffle 11 and the feeding baffle 13 have the same structure, the butt joints of the two anti-backfire baffles 11 and the two feeding baffles 13 are respectively provided with a step notch, the butt joint of the two anti-backfire baffles 11 and the two feeding baffles 13 is convenient, and the connecting pull plate 16 and the limiting sleeve 17 are in clearance fit, the connecting pulling plate 16 can conveniently slide in the inner cavity of the limiting sleeve 17, and the sliding direction of the connecting pulling plate 16 can be limited by the limiting sleeve 17;

a return spring 18 is welded between the bottom of the anti-backfire baffle plate 11 and the side wall of the feeding channel 1, when biomass fuel is fed, the biomass fuel is fed above the two horizontally-arranged anti-backfire baffle plates 11 (as shown in fig. 5), the driving shaft lever 4 is controlled to rotate by the driving mechanism, the driving cam 10 can press the anti-backfire baffle plates 11 downwards in an inclined state, the two feeding baffle plates 13 are pushed to be in a horizontal state by the connecting pull plate 16 (as shown in fig. 7), the biomass fuel on the anti-backfire baffle plates 11 is fed to the tops of the two feeding baffle plates 13, the horizontal position of the anti-backfire baffle plates 11 is restored by the rotation of the driving shaft lever 4 and the elastic force of the return spring 18, the feeding baffle plates 13 are in an inclined state (as shown in fig. 5), so that the biomass fuel on the feeding baffle plates 13 is fed into a combustion chamber of the boiler, and the two horizontally-arranged anti-backfire baffle plates 11 can resist backfire generated by biomass fuel combustion at the moment Due to the effect of the partition, the phenomenon that the tempered flame exceeds the top of the feeding channel 1 and is ignited to the outside to be fed with the biomass fuel is avoided, and the safety of feeding the biomass fuel into the boiler is improved.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a biomass boiler anti-backfire feeder, includes feed channel (1), its characterized in that: two driving shaft levers (4) are symmetrically arranged in an inner cavity of the feeding channel (1), two ends of each driving shaft lever (4) penetrate through the side wall of the feeding channel (1), a driving mechanism is arranged at one end of one driving shaft lever (4), a synchronizing mechanism is arranged between the other ends of the two driving shaft levers (4), a driving cam (10) is sleeved on the outer wall of each driving shaft lever (4), two anti-backfire baffles (11) are movably arranged in the inner cavity of the feeding channel (1) through pins, the anti-backfire baffles (11) are arranged below the driving cams (10), limiting sliding grooves (12) are respectively formed in two side walls of the inner cavity of the feeding channel (1), a feeding baffle (13) is movably arranged between the inner cavities of the two limiting sliding grooves (12) through a pin rod, and the feeding baffle (13) is arranged below the anti-backfire baffles (11), the anti-backfire feeding device is characterized in that inverted T-shaped sliding grooves (14) are formed in the top of the feeding baffle (13) and the bottom of the anti-backfire baffle (11), limiting sliding blocks (15) are movably mounted in an inner cavity of each inverted T-shaped sliding groove (14), connecting pull plates (16) are movably mounted between the two limiting sliding blocks (15) through pins, limiting sleeves (17) are sleeved on outer walls of the connecting pull plates (16), the limiting sleeves (17) are fixed on inner cavity side walls of the feeding channel (1) through bolts, and return springs (18) are welded between the bottom of the anti-backfire baffle (11) and the side walls of the feeding channel (1).

2. The biomass boiler backfire-proof feeding device as claimed in claim 1, wherein: the driving mechanism comprises a speed reducer (5) fixed on the side wall of the feeding channel (1) through a bolt, the output shaft end of the speed reducer (5) is connected with one end of one of the driving shaft rods (4) through a coupler, and a driving motor (6) is installed at the input shaft end of the speed reducer (5).

3. The biomass boiler backfire-proof feeding device as claimed in claim 1, wherein: the synchronous mechanism comprises two supporting shaft rods (7) welded on the side wall of the feeding channel (1) and synchronous gears (8) sleeved at the end parts of the two driving shaft rods (4), wherein the end parts of the two supporting shaft rods (7) are sleeved with transmission gears (9), the transmission gears (9) are meshed with the synchronous gears (8), and the two transmission gears (9) are meshed with each other.

4. The anti-backfire feeding device of the biomass boiler as claimed in claim 3, wherein: wear-resistant bearings are mounted at the connecting position of the driving shaft rod (4) and the feeding channel (1) and the connecting position of the supporting shaft rod (7) and the transmission gear (9), the driving cam (10) and the driving shaft rod (4) are fixedly connected through metal keys in an inserted mode, and the side wall of the driving cam (10) is in contact with the top of the anti-backfire baffle plate (11).

5. The biomass boiler backfire-proof feeding device as claimed in claim 1, wherein: the structure of the anti-backfire baffle (11) is the same as that of the feeding baffle (13), stepped notches are formed in the butt joint positions of the two anti-backfire baffles (11) and the two feeding baffles (13), and the connecting pull plate (16) is in clearance fit with the limiting sleeve (17).

6. The biomass boiler backfire-proof feeding device as claimed in claim 1, wherein: the top welding of feed passageway (1) has open hopper (2), the bottom welding of feed passageway (1) has connecting sleeve (3).